.memory-page {
  width: min(var(--max), calc(100% - 44px));
  margin-inline: auto;
  padding: clamp(32px, 6vw, 72px) 0 84px;
}

.memory-hero {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(260px, 360px);
  gap: clamp(26px, 5vw, 64px);
  align-items: end;
  padding-bottom: 28px;
}

.memory-hero h1 {
  max-width: 720px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 7vw, 78px);
  font-weight: 590;
  letter-spacing: 0;
  line-height: 1.02;
}

.memory-hero p {
  max-width: 650px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.55;
}

.memory-layout {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(280px, 360px);
  gap: 18px;
  align-items: stretch;
}

.memory-board-panel,
.memory-side {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 18px 46px rgba(18, 24, 32, 0.07);
}

.memory-board-panel {
  padding: clamp(16px, 2vw, 22px);
}

.memory-hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}

.memory-hud article {
  display: grid;
  gap: 3px;
  border: 1px solid rgba(30, 106, 120, 0.14);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.72);
}

.memory-hud span,
.panel-heading span,
.memory-rules span,
.theme-card small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.memory-hud strong {
  color: var(--teal);
  font-size: clamp(18px, 2vw, 27px);
  line-height: 1;
}

.memory-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(8px, 1.5vw, 14px);
}

.memory-card {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid rgba(30, 106, 120, 0.16);
  border-radius: 8px;
  background: transparent;
  perspective: 800px;
}

.memory-card-inner {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  transform-style: preserve-3d;
  transition: transform 360ms cubic-bezier(0.19, 1, 0.22, 1);
}

.memory-card.is-open .memory-card-inner,
.memory-card.is-matched .memory-card-inner {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: inherit;
  backface-visibility: hidden;
}

.card-back {
  background:
    radial-gradient(circle at 30% 20%, rgba(32, 178, 170, 0.18), transparent 42%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(238, 247, 246, 0.9));
}

.card-back::before {
  width: 38%;
  aspect-ratio: 1;
  border: 2px solid var(--gold);
  border-radius: 999px;
  content: "";
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.66);
}

.card-front {
  background:
    radial-gradient(circle at 72% 20%, rgba(178, 138, 70, 0.16), transparent 36%),
    rgba(255, 255, 255, 0.92);
  color: var(--teal);
  transform: rotateY(180deg);
}

.memory-card.is-matched .card-front {
  border: 1px solid rgba(32, 178, 170, 0.42);
  background:
    radial-gradient(circle at 50% 20%, rgba(32, 178, 170, 0.2), transparent 38%),
    rgba(255, 255, 255, 0.94);
}

.card-front svg {
  width: min(54%, 66px);
  height: auto;
}

.card-front path,
.card-front circle,
.card-front rect {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.memory-status {
  min-height: 24px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.memory-side {
  display: grid;
  gap: 18px;
  align-content: start;
  padding: 22px;
}

.panel-heading {
  display: grid;
  gap: 5px;
}

.panel-heading strong {
  color: var(--ink);
  font-size: 20px;
}

.theme-list {
  display: grid;
  gap: 10px;
}

.theme-card {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid rgba(18, 24, 32, 0.1);
  border-radius: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.62);
}

.theme-swatch {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(30, 106, 120, 0.14);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--a), var(--b));
}

.theme-card strong {
  color: var(--ink);
  font-size: 15px;
}

.theme-card > span:nth-child(2) {
  display: grid;
  gap: 3px;
}

.theme-card button {
  min-height: 34px;
  border: 1px solid rgba(30, 106, 120, 0.18);
  border-radius: 999px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--teal);
  font-size: 12px;
  font-weight: 760;
}

.theme-card button:disabled {
  cursor: not-allowed;
}

.theme-card.is-active button {
  background: linear-gradient(135deg, var(--teal), var(--mint));
  color: #fff;
}

.theme-card.is-locked {
  opacity: 0.58;
}

.memory-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.memory-rules {
  display: grid;
  gap: 10px;
}

.memory-rules article {
  border: 1px solid rgba(18, 24, 32, 0.1);
  border-radius: 8px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.58);
}

.memory-rules p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

body.theme-orbit .card-front {
  color: #3578b8;
}

body.theme-signal .card-front {
  color: #d96d5f;
}

@media (max-width: 900px) {
  .memory-page {
    width: min(100% - 28px, var(--max));
  }

  .memory-hero,
  .memory-layout {
    grid-template-columns: 1fr;
  }

  .memory-hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}